Bio drawings


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short instructional slideshow for my students on how to make good biological drawings

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Bio drawings

  1. 1. Making Biological Drawings
  2. 2. Biological drawings are animportant record of what youactually see through themicroscope.
  3. 3. You don’t have to be an artist to make good drawings, just neat and observant!And making drawings of what you seethrough the microscope forces you toobserve closely and accurately.
  4. 4. What makes a goodbiological drawing?
  5. 5. the drawings are sharp and clear
  6. 6. they’re large enough to makethe details easy to see and notcrowded on the page or in thespace
  7. 7. each specimen has a title
  8. 8. each drawing either shows the sizeof the specimen or indicates themagnification that was used whileviewing it
  9. 9. known and visible structures should be labeled with straight, neat lines that DO NOT cross over each otherwhen possible, keep the labellines vertical and make surethe line is right on thestructure you are identifying
  10. 10. Most importantly, draw what youACTUALLY SEE and not what you THINKyou should see or what you thinkSHOULD be there.
  11. 11. Here are the main points:•Don’t crowd things in your drawing.•Title your drawing as exactly as possible.•Include the magnification or size.•Label all known structures.•Label lines should be straight and NOT crossed over each other.•Keep label lines vertical.•Label lines should clearly end on the appropriate structure.•Draw what you actually see and don’t embellish.
  12. 12. Now, examine the picture here. It’san image you might see throughthe microscope. Read thedescription below:
  13. 13. Here’s a student’sdrawing of thatmicroscope imageon the last slide.This drawingshould be a lotbetter. Can youpick out all theerrors? Pausethe slideshow andtry to pick out asmany as you can.
  14. 14. Error#1Some lines crossover each otherand are angledinstead of straight
  15. 15. Error#2Cell shapes are inaccurateand don’t represent thelayers as they are seen inthe specimen; some ofthe “cells” have openlines and are just roundinstead of being shapedlike the real cells in theslide
  16. 16. Error #3There is no magnificationor size information given.
  17. 17. Error #4Some labels are drawn atan angle.
  18. 18. Error #5There’s a line to a celltype that has no label.
  19. 19. Error #6The title isn’t specificenough. What kind ofroot?
  20. 20. Here’s your assignment:•On a clean sheet of paper with a proper heading,make a biological drawing of the same microscopeimage from the example. Improve upon the one madeby our fictitious student and correct all the errors thatwere made.•Bring this drawing with you to your next classmeeting. If you do not have it with you, you will not beallowed to participate in the microscope lab that dayand will have to make arrangements with me to makeit up.The image is on the next slide. Have fun!!!!